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ULA Circuit Ultralight Backpack

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The Circuit. Weighing in at less than 41 OZ, we don’t think there’s a pack out there that can compare to the load carrying capabilities, comfort, and durability of the Circuit pack. If you have your total pack weight down around 30 pounds and want to feel the freedom of traveling light, this is the pack for you. The Circuit has been the most popular pack on the Pacific Crest Trail for the past 3 years according to the Halfway Anywhere annual survey of PCT thru hikers.

The Circuit pack utilizes a 1.2 OZ carbon fiber and Delrin suspension hoop in conjunction with a dense internal foam frame and a single aluminum stay to give you excellent back panel support, maximum load control, weight transfer, and pack rigidity without limiting your range of movement. 

Original Green, Black, Red, Orange and Purple Blaze packs are sewn with our 400 Robic Fabric, the toughest stuff ounce for ounce we’ve ever seen. The Multicam Camo pack is sewn with 500 Cordura Fabric. The Cordura is not quite as tear resistant and a little heavier than the Robic, adding an extra 2 oz to the total pack weight. Either way, this is one tough pack that will give you years of hiking bliss, even if you are a bit tough on your gear. This pack will take the abuse of a 2,600 mile hike and beg for more.

WEIGHT: 41 OZ | 1,162 GM
VOLUME: 4,200 CU IN | 68 L
MAX LOAD: 35 LBS | 16 KG


Removable features are in bold.

  • Internal Suspension Hoop
  • Padded Backpanel
  • Contoured Shoulder Straps
  • Front Shock Cord
  • Front Mesh Pocket
  • Dual Hipbelt Pockets
  • 400 Robic Adjustable Side Pockets
  • Rolltop Closure
  • Side/Top Compression Straps
  • Ice Axe/Pole Retention Loops
  • Bear Canister Capable
  • ULA  400 Robic
  • 400 Robic Bottom Panel
  • Hydration Sleeve (1.4 oz)
  • Internal Stash Pocket (1.1 oz)
  • Water Bottle Holsters (0.8 oz)
  • Handloops (0.8 oz)
  • Single Aluminum Stay (2.0 oz)



When you place your order, a "Special Instructions" window will appear. Please indicate your Hip Belt preference as follows:


Otherwise, The Default Belt size will match the Pack/Torso Size:

Small to Small, Medium to Medium, Large to Large 

If we are unable to fill your Preference due to availability, we will contact you with your options.  

Thank You.




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